Figure S1: Two human normal liver cell lines like L-02, QSG-7701 cells were treated with 200 μM EPS, 160 μM PA, or a combination of 200 μM EPS and 160 μM PA for 24 hrs; then MTT assays were performed. Results were normalized to values from the vehicletreated cells (*, P<0.05 versus +; #, **; +, P>0.05 versus **; #, P>0.05 versus **). The data showed that 200 μM EPS, or 160 μM PA alone caused some growth inhibition in two human normal liver cell lines like L-02, QSG-7701, however, the synergic growth inhibition was not observed in these two liver cells when 200 μM EPS was combined with 160 μM PA.